On Wed, Jul 09, 2003 at 02:31:56PM -0700, justin@mac.com wrote:
> Hi, all,
>
> There may be something obvious that I'm overlooking, but I am seeing a
> performance difference between two machines that seems
> counter-intuitive.
>
> I have gp on two Mac OS X systems (10.2.6 and, um, another one).
> 10.2.6 is on a 450Mhz G4, while the other one is on a 300Mhz G3. When
> I ran 'make bench' on the G3, it seemed to do much better than on the
> G4.
> parisize = 4000000, primelimit = 500000
> ============================================================
>
> FWIW, gcc on the G4 is 3.1, and on the G3 is 3.3.
Care to try with the same compiler on both machines ?
Most probably the difference come from the compiler. The other
possibility is the assembly kernel that can be faster on one CPU than on
the other but I doubt it.
Cheers,
Bill.